/*
 * Copyright (c) 2002-2013, Mairie de Paris
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice
 *     and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright notice
 *     and the following disclaimer in the documentation and/or other materials
 *     provided with the distribution.
 *
 *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
 *     contributors may be used to endorse or promote products derived from
 *     this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * License 1.0
 */
package fr.paris.lutece.plugins.genericjpa.service;

import org.apache.commons.lang.StringUtils;

import fr.paris.lutece.plugins.genericjpa.bean.GenericJPAFilter;
import fr.paris.lutece.plugins.genericjpa.dao.IGenericJPADAO;
import fr.paris.lutece.plugins.genericjpa.dao.commons.PaginationProperties;
import fr.paris.lutece.plugins.genericjpa.dao.commons.ResultList;
import fr.paris.lutece.plugins.genericjpa.dto.GenericJPADTO;


/**
 * The abstract class service
 * 
 * @param <K> the bean primary key
 * @param <E> the bean class
 */
public abstract class GenericJPAService<K, E> implements IGenericJPAService<K, E>
{
    protected abstract IGenericJPADAO<K, E> getDAO( );

    @Override
    public ResultList<E> findAll( PaginationProperties paginationProperties )
    {
        return getDAO( ).findAll( paginationProperties );
    }

    @Override
    public ResultList<E> find( GenericJPAFilter<K> filter, Class<E> type, PaginationProperties paginationProperties )
    {
        return getDAO( ).find( filter, type, paginationProperties );
    }

    @Override
    public void doSaveBean( GenericJPADTO<K, E> dto )
    {
        E fromDao = null;

        if ( dto.getId( ) != null )
        {
            //avoid bean with 0 (integer) or empty (string) value
            if ( ( ( dto.getId( ) instanceof Integer ) && ( (Integer) dto.getId( ) ).equals( 0 ) )
                    || ( ( dto.getId( ) instanceof String ) && ( StringUtils.isBlank( (String) dto.getId( ) ) ) ) )
            {
                dto.setId( null );
            }
            else
            {
                fromDao = getDAO( ).findById( dto.getId( ) );
            }
        }

        if ( fromDao != null )
        {
            getDAO( ).update( dto.convert( ) );
        }
        else
        {
            getDAO( ).create( dto.convert( ) );
        }
    }

    @Override
    public void doDeleteBean( K key )
    {
        E fromDao = getDAO( ).findById( key );

        if ( fromDao != null )
        {
            getDAO( ).remove( key );
        }
    }
}
